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Finding the Fourth Proportional to 76,611.40, 114,917.10 and 59,115.40

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Solution

The fourth proportional to 76,611.40, 114,917.10 and 59,115.40 is: 88,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,611.40 : 114,917.10 = 59,115.40 : x
  2. Step 2: Convert to fraction form
    76,611.40/114,917.10 = 59,115.40/x
  3. Step 3: Cross multiply
    76,611.40x = 114,917.10 × 59,115.40
  4. Step 4: Simplify right side
    76,611.40x = 6,793,370,333.34
  5. Step 5: Solve for x
    x = 6,793,370,333.34/76,611.40
  6. Step 6: Final answer
    x = 88,673.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.